Annual report pursuant to Section 13 and 15(d)

Balance Sheet Components - Property and equipment (Details)

v3.20.4
Balance Sheet Components - Property and equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Property and equipment, gross $ 1,021 $ 897
Less: Accumulated depreciation and amortization (879) (813)
Property and equipment, net 142 84
Machinery and equipment [Member]    
Property and equipment, gross 866 771
Tooling [Member]    
Property and equipment, gross 11 11
Computer software [Member]    
Property and equipment, gross 89 89
Furniture and fixtures [Member]    
Property and equipment, gross 15 15
Leasehold improvements [Member]    
Property and equipment, gross $ 40 $ 11